Submarine optical cable with water-blocking filling composition
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United States of America Patent
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-
Jun 10, 2008
Grant Date -
Jun 3, 2004
app pub date -
Dec 14, 2001
filing date -
Dec 28, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Optical cable, in particular for submarine connections. A water blocking resin filling composition of reduced hardness is disposed into interstices. Preferably, the resin composition is a polyurethane resin having less than about 35% by weight of a polyol/polyisocyanate mixture and about 60% to about 90% by weight of a mineral oil. The polyurethane resin preferably has less than about 12% by weight of a coupling agent. The cable has an optical core surrounded by a plurality of metallic wires and an outer polymeric sheath. The optical core is of the 'tight' type with a plurality of optical fibers embedded into a polymeric matrix disposed around a strength member.
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